William heisee



(No Model.)

W. HEISER.

DEVICE FOR MAKING NUTS.

No. 335,195. Patented Feb. 2, 1886.

Inventor flttmmey.

Witnesses NITED STATES PATENT FFICE.

XVILLIAM HEISER, OF BUFFALO, NEIV YORK.

DEVICE FOR MAKING NUTS.

EPECIFICATION forming part of Letters Patent No. 335,195, dated February2, 1886.

Application filed October 5. 1883. Serial No. 108,184.

To aZZ whom it may concern:

Be it known that LVILLIAM IIEISERpf Buffalo, in the county of Erie andState of New York, have invented certain new and useful Improvements onMethod of and Means for Manufacturing LoclcNuts; and I do hereby declarethat the following description of my said invention,taken in connectionwith the accompanying sheet of drawings, forms a full, clear, and exactspecification, which will enable others skilled in the art to which itappertains to make and use the same.

This invention is a device for manufacturing wrought-iron nuts, andespecially that class having in their face around the central aperturean annular rise or projection.

In the drawings already mentioned, which serve to illustrate my saidinvention more fully,Figure 1 is a plan view of a bolt and nut, thelatter being one of the class to which my invention appertains. Fig. 2is a sectional elevation of a portion of a die and punch. Fig. 3 is aperspective View of a nut-blank previous to its being punched. Fig. 4isa perspective view of a finished nut, and Fig. 5 is a sectionalelevation of a set of dies illustrating the position of the parts duringthe process of punching.

Like parts are designated by corresponding letters of reference in allthe figures.

A designates a fish-plate bolt provided with a nut, B, having on itsface a rise or projection, 0, concentric with the scrcw-theaded portionor aperture of said nut, said bolt A having in itsexternally-screwthreaded part a groove, D, into which aportion of themetal in the rise or projection is forced by means of a punch, set, orother analogous tool or implement (not shown) in an obvious andwellknown manner.

To successfully manufacture this nut B, which is the object of mypresent invention, I proceed substantially as follows: I construct amale punch, E, Fig. 2, of anysuitable contour, length, and size to fit aproperly-constructed press, and provide this punch with an angularsection, F, on its lower end, said section'being either a square, ahexagon, or of such ashape as the nut is to possess. Below this angularsection F, I provide a cylindrical or at most only a slightly-taperingpart, G, of the size of (No model.)

the bore of the nut to be produced, and terminate this portion G- in apoint or'very tapering part, H. I also construct a die, I, with anangular recess, J, corresponding with the size and contour of the punchE, a circular depression, K, answering to the rise or projection G onthe nut B, and with a cuttingaperture, L, fitting the punching portionG. Below this die I arrange a second punch, M, passing through the diefrom the bottom upward, this punch having a pointed or nearly pointedend, as clearly shown in the drawings, similar to that of the upperpunch, G. This die I secure in the press already mentioned, (not shown,)and place therein a nut-blank, Fig. 3, said nut-blank fitting thedepression J. I now force the punch E, or rather the portion G thereof,down upon said blank, which will have the efi'ect of first pushingaportion of the metal of said blank into the annular depression K insaid die, and after this is filled to force the surplus metal outthrough the cutting aperture L, such surplus metal or punching being inthe form of a burr. During the time that the upper punch descends andenters the metal of the nut B the lower punch, M, ascends and enters thenut blank from below, thereby causing the compression of the metal thatwould otherwise be forced out by the upper punch in the form of a burr,and at the same time assisting in both filling the recess K and indefining the contour of the tapping-aperture on the lower side of thenut. As soon as the recess K is well filled with metal the lower punchdescends,together with the upper punch, so that the perforating of thenut-blank is completed when the upper punch has fully passed through thesame in the usual manner.

Having thus produced the nut, it will be discharged from the die by anysuitable mechanism. (Not shown.)

It will be readily observed thatin the drawings I have attempted to showthe principal portions of a die and punch, only regardless of theirdetails of construction, such details being left to the judgment of thedie-maker acquainted with the requirements of nutpunching machinery. andnot being of my present invention. The lower punch, entering the metalfrom the under side, severs it so that when the upper punch begins topush the burr out of the nut-blank the hole has already been perfectlydefined by the lower punch. This double punching has, furthermore, theeffect of compressing the metal of the nutblank, and it is a matter offact that the burr resulting from the punching, as aforesaid, weighsonly about half as much as a similar burr produced When the upper punchalone is caused to perforate the nut.

Having thus fully described my invention, I claim as new and desire tosecure to me by Letters Patent of the United States The male punch E,having angular section F on its under side, said section F beingprovided on its under side with the finger-punch WM. HEISER.

Attest:

MICHAEL J. STARK, JOHN C. DUERR.

